Device for injecting apportioned doses of liquid drug

a technology for injecting devices and liquid drugs, which is applied in the direction of infusion needles, infusion syringes, other medical devices, etc., can solve the problems of device delivery of unintended doses, device bulky construction, and less attractive to carry around in e.g. a handbag

Inactive Publication Date: 2015-03-31
NOVO NORDISK AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0023]It is an object of the invention to provide an injection device in which the number of operating steps required to be performed by the user is reduced as compared to similar prior art injection devices.
[0024]It is a further object of the invention to provide an injection device which is intuitive and thereby easy to learn how to use.
[0025]It is an even further object of the invention to provide an injection device in which the dose setting procedure is simplified as compared to similar prior art injection devices.

Problems solved by technology

The device has a rather bulky construction which makes it less attractive to carry around in e.g. a handbag.
If the engagement member has moved into engagement with a tooth on the piston rod but the spring has not been secured against release, the device will deliver an unintended dose.
If this is not the case the user may risk injecting a smaller amount of drug than intended.
If the user in this case initially sets a dose and fires it into the air to prime the device, a substantial amount of drug may be wasted to the surroundings.
This is particularly unwanted if the drug is expensive.

Method used

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  • Device for injecting apportioned doses of liquid drug
  • Device for injecting apportioned doses of liquid drug
  • Device for injecting apportioned doses of liquid drug

Examples

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examples

[0189]In the following different examples embodying the invention in accordance with the second aspect are presented.[0190]1. An injection device comprising:[0191]a variable volume reservoir comprising an outlet,[0192]dose setting means operable to set a dose,[0193]injection means operable to inject the set dose and comprising an at least partly toothed rod adapted to cause a volume reduction of the reservoir,[0194]a drive member suited for undergoing relative motion with respect to the toothed rod during dose setting and for transmitting a driving force to the toothed rod during injection, the drive member comprising an engagement element adapted to engage with the toothed rod,[0195]guiding means adapted to guide the movement of the drive member and / or the toothed rod, and[0196]energy means operatively coupled to the dose setting means and the injection means and adapted to store and release energy for translational and rotational motion,

wherein operating the dose setting means to ...

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PUM

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Abstract

An injection device including a dose setting assembly, and an injection assembly, wherein operating the dose setting assembly to set a dose causes an engagement element to pass a tooth on a toothed rod in a combined translational and rotational movement.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation of U.S. application Ser. No. 12 / 864,279, filed Jul. 23, 2010, which is a 35 U.S.C. §371 national stage application of International Patent Application PCT / EP2009 / 050797 (published as WO 2009 / 092807), filed Jan. 23, 2009, which claimed priority of European Patent Application 08150533.1, filed Jan. 23, 2008; this application further claims priority under 35 U.S.C. §119 of U.S. Provisional Application 61 / 027,099, filed Feb. 8, 2008.FIELD OF THE INVENTION[0002]The present invention relates to an injection device for injecting apportioned doses of liquid drug, such as for injecting doses of a single fixed amount of drug, or for injecting doses of a limited number of different amounts of drug. More particularly, the present invention relates to an injection device in which the number of operations to be performed by a user is minimised. The injection device is particularly suitable for self-injection by the us...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): A61M5/00A61M5/20A61M5/24A61M5/31A61M5/315A61M5/32
CPCA61M5/24A61M5/20A61M5/3146A61M5/31541A61M5/31551A61M5/31555A61M5/3156A61M5/31563A61M5/31575A61M5/3158A61M5/3213A61M2005/2073A61M2005/2407A61M2005/3104A61M2205/581A61M2205/583A61M5/31571
Inventor RADMER, BOGLEJBOL, KRISTIANTORRY-SMITH, JONASMARKUSSEN, TOM HEDEBOM, LARS MORTENENGGAARD, CHRISTIAN PETERNIEMANN, SARA JUANAEBRO, MARTIN
Owner NOVO NORDISK AS
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